Artificial denture



Aug. 23,1927.

F. H. NlEs ARTIFICIAL DENTURE Filed March 17, 1924 INVENTOR ByAttorneys,

' out of the general plane.

Patented ug. 23, 19277.

UNITED STATES y 1,639,782 P,.crENfrl OFFICE.

FREDERICK HAROLD NIES, 0F BROOKLYN, NEW YORK..

ARTIFICIAL DENTURE.

Application fue@ March 17, 1924. semi No. 699,923.

Vbut each of these with which I arri' acquainted has some disadvantagewhich interferes with a perfect and durable union between the plate andteeth of therequired strength to withstand the strains of use. Accordingto the present invention Iprovide a tooth having an elongated recess ordeep socketat its basal end, and within this socket is arranged atubular anchor post having at its protruding end a flange whichareferably is adapted to be spaced apart from the base of the tooth.Preferably thev flange is originally formed on the post, but it ispermissible to in such fashion that. the sectionsv thus formed may beturned down at anfangle ,to the post to form the flange. .In any event,lby preference the liange is slit 'so asto pro'- vide a number of may beturned down at a more acute angle with relation to the post loodyA inorder that they mayiest on the end of the toothV and thus insure `thatthe flange of the post is sufficiently separatedfronithe end.; Otherfeatures of improvement will be hereinafter more fully described.lReferring toA the drawings which illustrate several forms of theinvention:

Figure l represents alongitudinal section of a tooth showing the4improved `post in perspective. i

Fig. 2 represents a similar section with the post in diametrical sectionshowing the use of the bent down flanges.

Fig. 3 is a section similar to Fig. 2 illustrating the post with a solidor unsplit flange before any portion of it has been bent Fig. 4 is a topview of the preferred form of post.

Fig. 5 is a section of a modified A'form'of ost. p vReferring to thedrawings, let A indicate r,and thus sections Gr suliiciently spaced fromthe end slit the ends of the posty necessity of sections, some of whichare provided which Y rial that it can an lartificial tooth ofthe typedescribed, that is to say, one in whichthe tooth is united toY the plateB by contact with the basal end y .C of the .toot-h. The latter isusually formed slightly concave so that the vulcanite or 'other materialof which'the plate is coinposed enters the basal end of the tooth andmakes a. sort of inortise connection there` with. D is the improved postprovided by the present invention, which post comprises a cylinder' ortube of any desired cross section, it being preferred to make the tubein one piece by Ythe drawing process. However, the post may be rolled ormay consist of two. longitudinal sections.

The basal end of the post is provided with a flange E Vwhich maybecontinuous as illustrated in Fig. 3, or may bey Aslotted or slit asillustrated in Figs. 1 and 2. I prefer the latter constructionsince itpermits soine of the sections F to be bent downwardly below theirfellows G sothat they Contact with the basal end of the'. tooth, holdthe'end of the .post withthe of the tooth to permit theflow of rubber orvulcanite beneath thesections F and Gr, par ticularly the latter. Thisobviatesf,` the Vaccurate .proportioning ofthe depth of the socket Hwithreference to the length o f the po'stQit-being only` necessary toform the socket in excess of' a given de th. i

i n' lieu of forming the head or flange ini'- `tially ontlie post, thelatter may be split longitudinally and .the sections thus formedbentdownto lform the flange.

Y Ihave Vshown a construction in which the post is Yformed ofsheetmetal,and

"has two legs J K originally lying flat with the Ahead L. These areafterwards bentl inwardly and then downwardly so as toL constitute ineffectatubularl post. The lower i end of thelpost may be flaredroutwardly in this, or in the other constructions illus- .'trated, ifdesired in order to secure a better binding" effect between the toothand post,

although this will 'not ordin'ar'ilybe necessary. y v i Preferably slotsI `will be provided `at the incisal end ,ofy the post so as to betterpermit the flow of rubber in the socket Vof the tube and to aid in thestrength ofthe union between the post land thevtooth. '.Flange E of thepost is preferably v.made of vsiichinatef beV readily bent ,SQ that evenin the continuous form one edge of the flange can be bent inwardly tocontact with some portion of the tooth structure. It will be understoodthatrtlie basalends of the teeth are customarily ground or hollowed outso that a portion of the flange willstrike the tooth wall and hold thepost in it-s up ward position with a large part of the flange spacedapart from the tooth. So also it is possible to bend a portion of theflange to secure the same results. It is also possible in some cases topermit the flange tori-est on the rbase of the tooth withoutseparation'` therefrom. It is also permissible to bend f the flange to aposition more or less in parallelism with the basal endv of the tooth.These and similar structures are intendedto be covered by the appendedclaims.

The use of a ltubular post is very advantageous in that when the post isapplied to the tooth the rubber or lcementitious material is placed inthe tooth and the post pressed Vdown without forcing out anyconsiderable amount of the material and that Whichdoes flow out beingpermittedto do so by the hollow'construction of the post. In the use ofsolid posts the post acts as a piston and squeezes down the material inthe socket which opposes the proper seating of the post. On occasionsalso, it puts placement of individual teeth where the latter may-becomedamaged in use.

Vhile I have shown and described the preferred embodiment of myinvention I do not wish to be limited thereto, since various changes maybe made therein without departing from the spirit ofV the. invention.IVhat I claim is:

l. A post for artificial teeth,'comprising a substantially tubularmember adapted to vventer a socket in the tooth, said tubularmemberhaving near its outer end a transversely extending part adapted toproject beyond the base of the tooth so as to permit the material of theplate to pass beneath it whereby'such part becomes embedded in theplate, andl forms an anchorage for the tooth,

a portion of suchV transversely extending means being adapted touholdthe 'post with `a portion of such partV separated from the base of thetooth.

2. A' postfor artificial teeth comprising a 'substantially tubularymember adapted"l to enter a socketvin the tooth, and having a Locaties`tooth so as to beneathsaid flange.

flange adapted to project above the basal end of the tooth for embedmentin the plate, said flange being formed in a number of seictions at leastoneof whichsections is adapted to be bent out of the general plane ofthe .flange'to support the post on the tooth: I

3. A post for artificial teeth comprising a substantially"tubular memberadapted to enter a socket in the tooth, and having a Y flange adapted toproject above the basal end of the tooth for embedment in the plate,said flange being formed in a number of sections at least one of whichsections is adapted to be bent out of: the general plane ofthe flange'to support the post on the tooth,"and said post having atvits inner enda communieating passage lbetween. its iiinerfand outer sides.- r

4. An artificial denture comprising one or more teeth and a platevvithan anchorage comprising a tubular post, a socket in the tooth into whichsaid post projects, Vand a flange at the upper part ofthe post sepajiatedat least in part from the'basal end of the tooth.

5. An artificial denture comprising one oi more teeth and a plate withan anchorage.

comprising a tubular post, a socket in the .j

tooth into which saidv post projects, a yflange at the top of the postseparated from the basal end of thetooth, and said flange hav,-V

ing a plurality of sections, some of-which are bent downwardly tocontact with the,

basal end of the toot 6. A post for artificial teeth comprising a memberadapted to enter a socket in the tooth, said member being tubularwhereby to permit flow of the material of the plate into it, and havinga'flange at its top' adapted to project above the basal end of the toothso that its underl side is separated therefrom at least in part wherebyto permit passage `of the material of the plate beneath said flange, andsaid fiange being bendable'V so lthat a part thereof maybe bent so .astoYcontact with the basal end 'of' the tooth yand thus maintain the postwith a part/,of4 the flange above said basal end.

7. A post, for artificial teeth comprising a l substantially tubularmember adapted to entera socketin the tooth and having a flange at itsouter end, with means carried by the outer end of saidmemberforseparating the post from the tooth, with atleast a part of saidfiange'projecting beyond and spaced apart from the basal end of Ythe 8.An artificial vvdenture comprising a tooth vand a plate rwith ananclioi'agefcompermit passage of materialv prising a tubulary post and asocket in the flange at the top of the post, the flange' and toothvbeing so constructed as to maintaina part of the flange spaced apartfrom the vtooth into which 4said post projects, jand basal end of thetooth, and the plate material passing around and beneath said flange.

9. A post for artificial teeth comprising a member adapted to enter asockety in the tooth and having a flange at its outer end, with meanscarried by the outer end of said member for separating the post from thetooth,` With at least a part of said flange projecting beyond and spacedapart from the basal end of the tooth so as to permit passage ofmaterial beneath said flange.

l0. A post for artieial teeth comprising a member adapted to enter asocket in the tooth and having formed integrally therewith a flange atits outer end, With means carried by the outer end of said member forseparating the post from the tooth, With at least a part of said flangeprojecting beyond and spaced apart from the basal end of the tooth soas, to permit passage of material beneath said iange.

11. A post :for artificial teeth comprising a substantially tubularmember open at both ends and adapted to enter a. socket in the tooth,said member having a flange at its outer end, with means carried by theouter end of said member for separating the post from the tooth, with atleast a part of said flange projecting beyond and spaced apart from thebasal end of the tooth so as to per mit passage of material beneath saidflange.

12. A post for artificial teeth comprising a member adapted to enter asocket in the tooth and having bendable spacing means carried by theouter end of said member adapted to longitudinally7 adjust the positionof said post With respect to the tooth.

13. A postfor artificial teeth comprising a substantially tubular memberadapted to enter al socket in the tooth, said tubularl member havingmeans adapted to engage a Wall of the tooth other than the bottom otsaid socket for holding the top of the post at least partially separatedfrom the tooth and the upper part of the tubular member havingtransversely extending portions to form an anchorage with a plate, theconstruction being such that the material of the plate is permitted toflovi7 around the transversely extending portion of the post into thesocket, and the post having a clear passage through it from top tobottom so that the material of the plate may flow through the top of thepost into the interior of the post.

In Witness whereof, I have hereunto signed my name.

FREDERICK HAROLD NIES.

